Keyword: «frozen ground»

the article discusses the features of the construction of the railway trackbed in permafrost areas and other difficult conditions, the structure and parameters of embankments, recesses, trenches and ditches, drainage ditches, temporary roads.

The results of long-term geothermal investigations in disturbed landscapes along the railway, water line and gas pipeline are presented. Human-induced changes in the ground thermal state are analyzed. The study has shown significant increases in mean annual temperature of the upper permafrost layers, as well as in seasonal thaw depth in the inter-alas type of terrain after the removal of trees, ground surface stripping and post-fire clearing. Quantitative estimates are given for the dynamics of mean annual ground temperatures on cuts and burns in relation to vegetation succession.

This paper examines the structure and properties of worn mid-motor blades on heavy-duty motor graders operating in Yakutia. The wear characteristics of mid-motor blades at low temperatures are revealed, and operational data are analyzed. The chemical composition, structure, and properties of motor grader blades from two different manufacturers were analyzed. The results showed that the working parts of heavy road construction equipment are characterized by the presence of a finely dispersed, needle-like structural component, which undergoes appropriate heat treatment.